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Concealed Duct High Static Pressure
Installation Manual
Error codes and parts to be checked
Wired remote
controller
display
Main defective parts Judging device Parts to be checked / error description
Air conditioner
status
Indication
E01
No header remote controller
Remote
controller
Incorrect remote controller setting --- The header remote controller has
not been set (including two remote controllers).
*
Remote controller
communication error
No signal can be received from the indoor unit.
E02
Remote controller transmission
error
Remote
controller
System interconnecting wires, indoor P.C. board, remote controller
--- No signal can be sent to the indoor unit.
*
E03
Indoor unit-remote controller
regular communication error
Indoor
Remote controller, network adapter, indoor P.C. board --- No data is
received from the remote controller or network adapter.
Auto-reset
E04
Indoor unit-outdoor unit serial
communication error
Indoor
System interconnecting wires, indoor P.C. board, outdoor P.C. board -
-- Serial communication error between indoor unit and outdoor unit
Auto-reset
IPDU-CDB communication error
E08 Duplicated indoor addresses Indoor
Indoor address setting error --- The same address as the self-address
was detected.
Auto-reset
E09
Duplicated header remote
controllers
Remote
controller
Remote controller address setting error --- Two remote controllers are
set as header in the double-remote controller control.
*
(* The header indoor unit stops raising alarm and follower indoor units
continue to operate.)
E10 CPU-CPU communication error Indoor
Indoor P.C. board --- Communication error between main MCU and
motor microcomputer MCU
Auto-reset
E18
Header indoor unit-indoor
follower unit regular
communication error
Indoor
Indoor P.C. board --- Regular communication is not possible between
header and follower indoor units or between twin header (main) and
follower (sub) units.
Auto-reset
E31 IPDU communication error Outdoor Communication error between IPDU and CDB Entire stop
F01
Indoor unit heat exchanger
sensor (TCJ) error
Indoor
Heat exchanger sensor (TCJ), indoor P.C. board --- Open-circuit or
short-circuit of the heat exchanger sensor (TCJ) was detected.
Auto-reset
F02
Indoor unit heat exchanger
sensor (TC) error
Indoor
Heat exchanger sensor (TC), indoor P.C. board --- Open-circuit or
short-circuit of the heat exchanger sensor (TC) was detected.
Auto-reset
F04
Outdoor unit discharge temp.
sensor (TD) error
Outdoor
Outdoor temp. sensor (TD), outdoor P.C. board --- Open-circuit or
short-circuit of the discharge temp. sensor was detected.
Entire stop
F06
Outdoor unit temp. sensor (TE/
TS) error
Outdoor
Outdoor temp. sensors (TE/TS), outdoor P.C. board --- Open-circuit or
short-circuit of the heat exchanger temp. sensor was detected.
Entire stop
F07 TL sensor error Outdoor TL sensor may be displaced, disconnected or short-circuited. Entire stop
F08
Outdoor unit outside air temp.
sensor error
Outdoor
Outdoor temp. sensor (TO), outdoor P.C. board --- Open-circuit or
short-circuit of the outdoor air temp. sensor was detected.
Operation
continued
F10
Indoor unit room temp. sensor
(TA) error
Indoor
Room temp. sensor (TA), indoor P.C. board --- Open-circuit or short-
circuit of the room temp. sensor (TA) was detected.
Auto-reset
F12 TS (1) sensor error Outdoor TS (1) sensor may be displaced, disconnected or short-circuited. Entire stop
F13 Heat sink sensor error Outdoor
Abnormal temperature was detected by the temp. sensor of the IGBT
heat sink.
Entire stop
F15 Temp. sensor connection error Outdoor Temp. sensor (TE/TS) may be connected incorrectly. Entire stop
F29
Indoor unit, other P.C. board
error
Indoor Indoor P.C. board --- EEPROM error Auto-reset
F31 Outdoor unit P.C. board Outdoor Outdoor P.C. board ---- In the case of EEPROM error. Entire stop
H01
Outdoor unit compressor
breakdown
Outdoor
Current detect circuit, power voltage --- Minimum frequency was
reached in the current releasing control or short-circuit current (Idc)
after direct excitation was detected
Entire stop
H02 Outdoor unit compressor lock Outdoor Compressor circuit --- Compressor lock was detected. Entire stop
H03
Outdoor unit current detect circuit
error
Outdoor
Current detect circuit, outdoor unit P.C. board --- Abnormal current was
detected in AC-CT or a phase loss was detected.
Entire stop
H04 Case thermostat operation (1) Outdoor Malfunction of the case thermostat Entire stop
H06
Outdoor unit low-pressure
system error
Outdoor
Current, high-pressure switch circuit, outdoor P.C. board --- Ps
pressure sensor error was detected or low-pressure protective
operation was activated.
Entire stop
L03
Duplicated header indoor units
Indoor
Indoor address setting error --- There are two or more header units in
the group.
Entire stop
L07
Group line in individual indoor
unit
Indoor
Indoor address setting error --- There is at least one group-connected
indoor unit among individual indoor units.
Entire stop
L08 Indoor group address not set Indoor Indoor address setting error --- Indoor address group has not been set. Entire stop
L09 Indoor power level not set Indoor Indoor power level has not been set. Entire stop
L10 Outdoor unit P.C. board Outdoor In the case of outdoor P.C. board jumper wire (for service) setting error Entire stop
39-EN